<template>
  <el-container class="home-container">
    <!-- 头部区域 -->
    <el-header>
      <div>
        <img class="logo" src="../assets/logo.png" alt />
        <span>彩虹游后台管理系统</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
    </el-header>
    <!-- 页面主体区域 -->
    <el-container>
      <!-- 侧边栏 -->
      <el-aside :width="isCollapse?'64px':'200px'">
        <div class="toggle-button" @click="toggleCollapse">|||</div>
        <!-- 侧边栏菜单区域 -->
        <el-menu
          background-color="#00abae"
          text-color="#fff"
          active-text-color="rgb(42, 97, 164)"
          unique-opened
          :collapse="isCollapse"
          :collapse-transition="false"
          :router="true"
          :default-active="activePath"
        >
          <!-- 一级菜单 -->
          <el-submenu :index="item.id+''" v-for="item in menulist" :key="item.id">
            <!-- 一级菜单的模板区域 -->
            <template slot="title">
              <!-- 图标 -->
              <i :class="iconsObj[item.id]"></i>
              <!-- 文本 -->
              <span>{{item.authName}}</span>
            </template>

            <!-- 二级菜单 -->
            <el-menu-item
              :index="'/'+subItem.path"
              v-for="subItem in item.children"
              :key="subItem.id"
              @click="saveNavState('/'+subItem.path)"
            >
              <template slot="title">
                <!-- 图标 -->
                <i class="el-icon-menu"></i>
                <!-- 文本 -->
                <span>{{subItem.authName}}</span>
              </template>
            </el-menu-item>
          </el-submenu>
        </el-menu>
      </el-aside>
      <!-- 右侧内容主体 -->
      <el-main>
        <!-- 路由占位符 -->
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>

<script>
export default {
  data() {
    return {
      // 左侧菜单数据
      menulist: [],
      iconsObj: {
        125: 'iconfont icon-user',
        103: 'iconfont icon-tijikongjian',
        101: 'iconfont icon-shangpin',
        102: 'iconfont icon-danju',
        145: 'iconfont icon-baobiao',
      },
      // 是否折叠
      isCollapse: false,
      // 被激活的链接地址
      activePath: '',
    }
  },
  created() {
    this.getMenuList()
    this.activePath = window.sessionStorage.getItem('activePath')
  },
  methods: {
    async logout() {
      const confirmResult = await this.$confirm('您确认退出登录吗?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning',
      }).catch((err) => err)

      if (confirmResult !== 'confirm') {
        return
      }

      window.sessionStorage.clear()
      this.$router.push('/login')
    },
    // 获取所有的菜单
    async getMenuList() {
      const { data: res } = await this.$http.get('menus')
      if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
      this.menulist = res.data
      // console.log(res)
    },
    // 点击按钮切换菜单的折叠与展开
    toggleCollapse() {
      this.isCollapse = !this.isCollapse
    },
    // 保存链接的激活状态
    saveNavState(activePath) {
      window.sessionStorage.setItem('activePath', activePath)
      this.activePath = activePath
    },
  },
}
</script>

<style lang="less" scoped>
.home-container {
  height: 100%;
}

.el-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: #00a2b9;
  color: #fff;
  font-size: 20px;
  & > div {
    display: flex;
    align-items: center;
    span {
      margin-left: 15px;
    }
  }
  .logo {
    margin-top: 9px;
    height: 55px;
  }
}

.el-aside {
  background-color: #00abae;
  .el-menu {
    border-right: none;
  }
  .el-submenu__title i {
    color: #d7dadf;
  }
}

.el-main {
  background-color: #eaedf1;
}

.iconfont {
  margin-right: 10px;
  color: '#d2d6dd';
}

.el-icon-arrow-down {
  color: #77ac32 !important;
}

.el-icon-arrow-down:before {
  color: #77ac32 !important;
}

.el-menu-item.is-active,
.el-menu-item:hover {
  // background-color: rgba(255, 255, 255, 0.3) !important;
}

.toggle-button {
  background-color: #07c2c2;
  font-size: 10px;
  line-height: 24px;
  color: rgba(255, 255, 255, 0.8);
  text-align: center;
  letter-spacing: 0.3em;
  cursor: pointer;
}

/deep/.el-submenu__title .el-icon-arrow-down:before {
  content: '\e6df';
  color: #d7dadf;
}
</style>